<template>
  <div id="root">
    <div class="todo-container">
      <div class="todo-wrap">
				<!-- 头部结构 -->
        <Header :addTodo="addTodo"/>
				<!-- 列表结构 -->
        <List :todos="todos" :checkTodo="checkTodo" :deleteTodo="deleteTodo"/>
				<!-- 底部结构 -->
        <Footer :todos="todos" :checkAll="checkAll"/>
      </div>
    </div>
  </div>
</template>

<script>
	import Header from './components/Header'
	import List from './components/List'
	import Footer from './components/Footer'

	export default {
		name: "App",
		components:{Header,List,Footer},
		data() {
			return {
				todos:[
					{id:'98uisyd765',title:'吃饭',done:true},
					{id:'jiusdfdy77',title:'睡觉',done:false},
					{id:'p7kp98dssd',title:'学习',done:true},
				]
			}
		},
		methods: {
			//用于勾选or取消勾选一个todo项
			checkTodo(id){
				this.todos.forEach(todo => {
					if(todo.id === id) {
						todo.done = !todo.done
					}
				})
			},
			//用于删除一个todo
			deleteTodo(id){
				this.todos = this.todos.filter(todo => todo.id !== id)
			},
			//用于添加一个todo
			addTodo(todoObj){
				this.todos.unshift(todoObj)
			},
			//用于全选or全不选
			checkAll(done){
				this.todos.forEach( todo =>todo.done = done)
			}
		},
	};
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>